Speaking as SLF but one with a background in technology...
Will there eventually be pilotless planes? Maybe.
Will anybody working today be made redundant by such technology? Not you your or my lifetime.
Consider this. Trains have to be the easiest form of transport in the world to convert to driverless. There's no steering, route control is done remotely by changing points/switches, etc. Yet the number of rail lines all over the world that have converted to driver less is still relatively small--and many of those still have a driver on board, just changed to spend most of his time opening doors and such.
The next easiest vehicle to convert to driverless would be the automobile. After all, cars only operate in two dimensions, not three. They're working on driverless cars and debating liability issues but I'm not holding my breath.
So, of all the things a pilot should lose sleep over, I'd say that pilotless planes should be pretty low on the list.